I received this as a Christmas gift from a well-intentioned friend, but I don’t play an upright. 3/4 scale. To my knowledge this is a new string, but the package’s exterior looks like it’s seen better days. $25 shipped CONUS via Paypal.{}

Actually, this string appears to be a low D, for string extension mechanism.
It sells for around $90, but is a very specialized string.
If someone is able to wind it up on a regular bass without string extension mechanism (it’s an extra-long string), it’s meant to play F#.

Actually, this string appears to be a low D, for string extension mechanism.
It sells for around $90, but is a very specialized string.
If someone is able to wind it up on a regular bass without string extension mechanism (it’s an extra-long string), it’s meant to play F#.

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Thank you very much for graciously volunteering this information. I’m taking this down until I decide exactly what I should do with it.